If resistance is more than 10 k/ohms, replace PCM.
120) For Continuous Memory Only DTC P0403 & P1409: Wiggle EGR Vacuum Regulator
Solenoid While Monitoring VPWR
If DTC P1409 was output during KOEO or KOER self-test, go directly to step 110) to diagnose present
fault. DTC P1409 indicates self-test failed due to EGRVR circuit voltage reading too high or too low
when compared to expected voltage range. Possible causes are:
z
EGRVR Circuit Open Or Shorted To VPWR Or GND
z
VPWR Circuit Open To EGRVR Solenoid
z
Faulty EGRVR Solenoid
z
Faulty PCM
Turn ignition switch to OFF position. Disconnect PCM connector(s). Inspect connector for loose,
damaged or corroded terminals. Repair as necessary. Turn ignition switch to ON position. Using a
DVOM, measure voltage between PCM harness connector EGRVR and PWR GND terminals. See PCM
CONNECTOR IDENTIFICATION. Voltage should be more than 10.5 volts. Observe DVOM for
indication of fault while tapping lightly on EGRVR solenoid, and wiggling EGRVR solenoid wiring
harness and connector to simulate road shock. Fault is indicated by a sudden drop in voltage reading. If
fault is indicated, isolate and repair as necessary. If no faults are indicated, unable to duplicate or identify
fault at this time. Go to TEST Z, step 1).
TEST HK: VARIABLE CAM TIMING
Diagnostic Aids
Perform this test when instructed by QUICK TEST. This test is only intended to diagnose:
z
Wiring Harness Circuits (VCT & VPWR)
z
VCT Solenoid
z
Faulty Powertrain Control Module (PCM)
NOTE:
A break in step numbering sequence occurs at this point. Procedure skips
from step 114) to step 120). No test procedures have been omitted.
NOTE:
For additional testing information, see DIAGNOSTIC AIDS.
NOTE:
After each service or repair procedure has been completed, reconnect all
components. Clear DTCs and repeat QUICK TEST procedures to ensure all EEC-
V systems are working properly and DTCs are no longer present.
2003 Ford Pickup F150
2003 ENGINE PERFORMANCE Self-Diagnostics - CNG, Flex-Fuel & Gasoline